Malignant Mediastinal Soft Tissue Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A malignant mesenchymal neoplasm that arises from the mediastinum.

**Synonyms:** - Malignant Mediastinal Soft Tissue Tumor - Malignant Soft Tissue Neoplasm of Mediastinum - Malignant Soft Tissue Neoplasm of the Mediastinum - Malignant Soft Tissue Tumor of Mediastinum - Malignant Soft Tissue Tumor of the Mediastinum